Switching

Hi, I have to install a Cisco IE-4000-4S8P4G-E switch in a substation in which we have equipment sending GOOSE frames; this device sends these frames to another client device connected to a cisco 2960X-24TS-S switch on the LAN. Do you know if these f...

Hi guys, i have an extrange issue with some port channels on my cisco 9300 series (stack with 4 members). I have a port channel (4 interfaces) betwenn a Cisco and a Fortinet D500 (firewall) and the issues is this:  when i have the four interfaces con...

Hello,I have these switchs : 2 x 9300  : already configured by a other person4 x 2960-x : new, out of the box--I configure IP, VLAN,Trunk,ports, ..., etc... for the 2960-xAnd it"s OK.Then, I connect one the 2960-x with the 9300, on the same configura...

Greetings, We are running into authentication issues. I know there is a command to see what DACL was sent down to the switch, but can't remember it for the life of me. On older switched **bleep** ip access-lists int gi1/0/5 would show it, but on the ...

As I know, VXLAN uses OSPF for its underlay. However, it seems BGP is involved in the underlay, but I cannot figure out the purpose. A VTEP encapsulates a packet, and if OSPF is deployed, every device should be able to route the packet to another VTE...

Hello,The command "show log" seems to be with low details and with no history y default, inside 2960-X.How to increase the detail level and the history (last 365 days, for exemple) ?Regards, 

Hi! I have configured a WS-C2960L-SM-48TS switch with multiple VLANs which are working fine.Another switch which serves VLANs 10,40,50 has been connected to the 2960L switch on interface Gi0/46.Interface Gi0/46 has been set as Trunk and VLANs 10,40,5...

Cisco 2960-48 switch has powered Cisco 7965 phones for 2 years w/o problem.  This week we lose power and when it is restored the phones won't power up.  After much troublshooting I trip across the solution - unplug the Jabra headset from the AUX jack...

Which type of cable must you use to connect two device with mdi interfaces ?

Goodmorning Cisco  team, we currently have a POE model Meraki 802.3at MA-INJ-4, which we connect to Merakis MR42E from outside to SW 2960 (WS-C2960 + 48PST-S), we have the problem that we do not achieve that they work correctly the AP when connecting...

Dear Community, I would like to add MACsec (in Manual Mode) between 3560C and 3560X switches. According to these links 3560C can be configured:https://www.cisco.com/c/dam/en/us/solutions/collateral/borderless-networks/trustsec/trustsec_platform_suppo...

Hi all, I'm looking to provide a standard dot1q-tunnel between switches, either ME3400 or 3560 CPEs.  I need to tunnel usual L2TPs (CDP, STP, VTP, LLDP), but I want the handoff interfaces to avoid accepting CFM frames (multicast dest MAC = 01-80-C2-0...

Hi, I have a problem in specific VLAN and this is the error  %SW_MATM-4-MACFLAP_NOTIF: Host 1c66.6d97.7871 in vlan 111 is flapping between port Gi2/0/9 and port Te2/0/1this error is continuously and I can't browse the internet and when i  assigned an...

On our network we encounter every XX seconds network topology changes This is alwasy on the SG220 TypesThe Catalyst 2960x On the SG220 devices we don't see these changes Everything is in RSTPAll they switches are on the latest firmware except the Cat...